List simple experimental tests to determine if either Hydrogen, Oxygen, Chlorine or Carbon Dioxide gas was produced in a reaction. State conditions and expected positive results for each

Presence of:H2: Squeaky Pop Test: use a lit split to light a small sample of gas in a test tube. If Hydrogen, then a Squeaky pop will occur. O2: Glowing Splint Test: Add a still glowing splint to a small sample of gas in a test tube. If Oxygen, the splint with reignite. CO2: Limewater Test: Bubble the gas through a sample of Calcium Hydroxide, Ca(OH)2 . If Carbon Dioxide, a white precipitate of Calcium Carbonate, CaCO3 will form from the original clear liquid. Cl2: Bleach Test: Place a piece of litmus paper in a sample in a test tube. If Chlorine, the litmus will go from either blue or red to white in colour.

Answered by Daniel S. Chemistry tutor

1823 Views

See similar Chemistry GCSE tutors

Related Chemistry GCSE answers

All answers ▸

25 cm^3 of a solution of known 0.2M HCl is neutralised by titration by 21.5cm^3 of NaOH solution. Calculate then concentration of the NaOH solution to 3dp.


Balance the following equation showing complete combustion of a hydrocarbon: C3H8 + O2 --> CO2 +H2O


What is an ionic bond?


What are the differences between intermolecular and intramolecular forces?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences